// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_AURA_WINDOW_TREE_HOST_PLATFORM_H_
#define UI_AURA_WINDOW_TREE_HOST_PLATFORM_H_

#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "ui/aura/aura_export.h"
#include "ui/aura/window_tree_host.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/platform_window/platform_window.h"
#include "ui/platform_window/platform_window_delegate.h"

namespace aura {

// The unified WindowTreeHost implementation for platforms
// that implement PlatformWindow.
class AURA_EXPORT WindowTreeHostPlatform
    : public WindowTreeHost,
      public NON_EXPORTED_BASE(ui::PlatformWindowDelegate) {
public:
    explicit WindowTreeHostPlatform(const gfx::Rect& bounds);
    ~WindowTreeHostPlatform() override;

    // WindowTreeHost:
    ui::EventSource* GetEventSource() override;
    gfx::AcceleratedWidget GetAcceleratedWidget() override;
    void ShowImpl() override;
    void HideImpl() override;
    gfx::Rect GetBounds() const override;
    void SetBounds(const gfx::Rect& bounds) override;
    gfx::Point GetLocationOnNativeScreen() const override;
    void SetCapture() override;
    void ReleaseCapture() override;
    void SetCursorNative(gfx::NativeCursor cursor) override;
    void MoveCursorToNative(const gfx::Point& location) override;
    void OnCursorVisibilityChangedNative(bool show) override;

protected:
    WindowTreeHostPlatform();
    void SetPlatformWindow(scoped_ptr<ui::PlatformWindow> window);
    ui::PlatformWindow* platform_window() { return window_.get(); }

    // ui::PlatformWindowDelegate:
    void OnBoundsChanged(const gfx::Rect& new_bounds) override;
    void OnDamageRect(const gfx::Rect& damaged_region) override;
    void DispatchEvent(ui::Event* event) override;
    void OnCloseRequest() override;
    void OnClosed() override;
    void OnWindowStateChanged(ui::PlatformWindowState new_state) override;
    void OnLostCapture() override;
    void OnAcceleratedWidgetAvailable(gfx::AcceleratedWidget widget,
        float device_pixel_ratio) override;
    void OnAcceleratedWidgetDestroyed() override;
    void OnActivationChanged(bool active) override;

private:
    gfx::AcceleratedWidget widget_;
    scoped_ptr<ui::PlatformWindow> window_;
    gfx::NativeCursor current_cursor_;
    gfx::Rect bounds_;

    DISALLOW_COPY_AND_ASSIGN(WindowTreeHostPlatform);
};

} // namespace aura

#endif // UI_AURA_WINDOW_TREE_HOST_PLATFORM_H_
